Description
VitraPOR® glass filter plate with 70 mm diameter and porosity 4 is a precision laboratory component manufactured from borosilicate glass 3.3. It offers a thickness of 5,5 mm with a tolerance of ± 1,3 mm together with an untreated, round-centred surface that supports consistent seating in filtration assemblies. The defined porosity grade enables controlled particle retention during liquid or gas filtration steps commonly performed in analytical chemistry, sample preparation and research workflows. Chemical resistance and thermal stability inherent to borosilicate 3.3 glass make the plate suitable for repeated use under typical laboratory conditions. Supplied in packs of 5 pieces from manufacturer ROBU - Stereon, the disc integrates readily into standard filter holders and apparatus requiring a 70 mm format. Its untreated surface preserves the native glass characteristics while the centred geometry simplifies alignment and sealing. This filter plate provides a reliable medium for laboratory filtration tasks that demand a specific porosity class without additional surface treatments.
This article is part of Sintered glass filter plates & discs, in Filtration.
Key features
- Pack size: 5 pc(s)
- Brand: VitraPOR®
- Diameter: 70 mm
- Porosity: 4
- Thickness: 5,5 mm ± 1,3 mm
- Filter material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Filter Disc, centered, 70 mm, Por. 4 Thickness 5.5 mm ± 1.3 mm
What is this article?
Filter Disc, centered, 70 mm, Por. 4 Thickness 5.5 mm ± 1.3 mm is the article on this page. Luminix Health distributes ROBU - Stereon for laboratory use. It sits in Sintered glass filter plates & discs, inside Filtration, in Lab consumables.
A sintered glass filter is a disc of fused glass particles with a porosity grade, often 0 to 5, from coarse to fine. It is cleaned and reused. The porosity number, not a micrometre guess, is the specification. Hydrofluoric acid and strong alkali attack the glass.
Filtration holds back what is larger than the pores and lets the rest through. Paper is the ordinary laboratory filter. A membrane has a stated pore size and a polymer that must survive the solvent. A syringe filter is that membrane in a housing on a syringe. Glass fibre takes a higher dirt load. Ultrafiltration holds back macromolecules and passes salts. The pore size, the chemical compatibility and the volume are the three choices. Laboratory apparatus around filtration is indexed under ISO laboratory apparatus.
Which category should I open next?
The category is Filtration. The sub-category is Sintered glass filter plates & discs. The catalogue is Lab consumables.
Shelves beside this one are Filter paper, Syringe filters, Filter cartridges & capsules, Membrane filters, Glass & quartz fibre filters, Bottle-top & vacuum filtration units, Ultrafiltration & concentrators, Filtration accessories, Extraction thimbles and Dialysis tubing & devices.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
